Case: Investigation Mark. Who was he and what did he do? Who were his friends? What is his story? The Bible Detectives, Harry, Jess and Click the mouse are on the case, ready to investigate... but they need your help! Are you ready? With the help of their computer, faxes and modems The Bible Detectives are ready to get to grips with this mystery... but there is one important piece of equipment they need God's Word - The Bible. Help them to zone in on the answers, flick through the data and follow up the clues. Meet the people that Mark met and learn about his very special friend - Jesus Christ.